<h2>Spice On balls</h2>
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<div class="sub">Introduction</div>
Spice on balls is a small project continuing on the imfamous "kruidenrondgang". The idea is now to have the whole thing turning on a ball bearing, that is a <b>Gigantic</b> Ball Bearing (Kogellager is the Dutch Word). Balls are so big that the whole thing in combination with the middle tube may arise some provocative thoughts to some, a dirty mind is joy forever. And being able to find your spices nicely and ordered in your kitchen cupboard or on the sink is a tremendous joy for everyone.<br/>
<img class="floatLeft" src="img/ballbearing.png"/>
The balls inside the bearing must run in some kind of gutter, on the top and floor. My idea however is to save on material by tearing the inside and outside gutter apart and use the inside gutter boundary in the floor and the outside boundary at the top. See left image for clarification<br/> 
Furthermore I also consider this a showcase for iScriptDesign's features such as inline calculation, parameterizable design and direct input for lasercutter.
<a class="reference" href="http://unlimiteddesigncontest.org/en/product/kruidenrondgang-ii">Kruidenrondgang</a>
<div class="sub">Material</div>
For the sheets of wood I choose the 3mm chemical wood available at Fablab Amsterdam. For the balls I saved the balls from the deorollers I used in the past, most of them have the same radius 17.75 mm. Important is that they are exactly the same size, otherwise the ball bearing won't work. The rod was purchased at a Gamma,
The the plexiglass tube was ordered at bouwplastics.nl. <br/> Important is that you do not rely on the measurements given by the shops, always measure for yourself at different positions in the material.
<div class="sub">Design</div>
The whole design is fully parameterizable available at www.iscriptdesign.com  (FabMoments -&gt; spiceonballs).
And consists of 4 outer circles, labeled with "ground", "ball gutter", "first level above the balls", "second and top level". It also has a number of parameters, labels are self explanery and you're free to experiment with them.
Note that the design is such that the floor and inner gutter circles are designed to narrow fit the inner tube, the rest of the circles have a wider hole for the middle tube so smooth turning is assured.
<br/> When you want to use the design at iscriptdesign you should change parameters to your own liking, the scale must be one to one. <br/>
Press export, and copy and paste the export in a (plain) text file. (spiceonballs.svg will do). Now you can open this file in Adobe Illustrator. Double check the measurements, remove all but the black lines, copy the disc labeled second and top level, fix the linewidth and cut everything on the lasercutter. The small holes in the discs are for aligning the gutter boundaries to discs below and above.
<a class="reference" href="http://www.iscriptdesign.com">www.iscriptdesign.com</a>
<div class="sub">Outcome and recommendations</div>
Unfortunately I miscalculated the outer gutter boundary so the balls had to much movement, the gutter was too wide for the ball bearing construction too work (The design on iscriptdesign has been fixed). Also 3 mm for thickness of material is probably not enough, as the balls will roll over to easy. I also mixed up radius and diameter for the inner tube, which cost me an extra sheet of chemical wood.
Unfortunately there is no result to show right now, so I'll need to come back or maybe somebody will finish my ideas.
<div class="sub">Thanks</div>
To the great people of Fablab, for helping me out with the equipment. 
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